GENERAL DESCRIPTION

The AMS682 is a CMOS charge pump converter that provides an inverted doubled output from a single positive supply. Requiring only three external capacitors for full circuit implementation the device has an on -board 12kHz (typical) oscillator which provides the clock.

Low output source impedance (typically 140W), provides output current up to 10mA. The AMS682 features low quiescent current and high efficiency, making it the ideal choice for a wide variety of applications that require a negative voltage derived from a single positive supply. The compact size and minimum external parts count of the AMS682 makes it useful in many medium current, dual voltage analog power supplies.

The AMS682E is operational in the full industrial temperature range of -40°C to 85°C while AMS682C is operating over a 0°C to 70°C temperature range. The AMS682E/AMS682C are available in surface mount 8-Pin SOIC (SO-8) and 8-Pin Plastic DIP (PDIP) packages.

FEATURES

• 99.9 Voltage Conversion Efficiency

• 92 Power Conversion Efficiency

• Wide Input Voltage Range +2.4V to 5.5V

• 185mA Supply Current

• Available in SO-8 and PDIP Packages

• Only 3 external Capacitors Required

APPLICATIONS

• Portable Handheld Instrumentation

• Cellular Phones

• Panel Meters

• -10V from +5V logic Supply

• -6V from a Single 3V Lithium Cell

• LCD Display Bias Generator

• Operational Amplifiers Power Supplies